Certified Six Sigma Black Belt Exam FREE Certified Six Sigma Black Belt Assessment Questions and Answers 3

Question 1

A Black Belt calculates that a process produces 3.4 defects per million opportunities. What sigma level does this represent?

Accepted Answer

6 sigma

Answer

A 6 sigma process with a 1.5 sigma shift produces 3.4 defects per million opportunities, which is the benchmark goal of Six Sigma methodology.

Question 2

When conducting a Gage R&R study, the results show that the measurement system accounts for 35% of total observed variation. What action should the Black Belt take?

Accepted Answer

Improve the measurement system before collecting process data

Answer

A Gage R&R above 30% indicates the measurement system is unacceptable and must be improved before reliable process data can be collected.

Question 3

Which statistical test should a Black Belt use to compare the means of three or more groups simultaneously?

Accepted Answer

ANOVA

Answer

Analysis of Variance (ANOVA) is designed to test whether there are statistically significant differences among the means of three or more independent groups.

Question 4

In the Control phase, a Black Belt implements an X-bar and R chart. The X-bar chart shows a point beyond the upper control limit. What should be done first?

Accepted Answer

Investigate the assignable cause

Answer

An out-of-control signal requires immediate investigation to identify and address the assignable (special) cause of variation.

Question 5

A Black Belt needs to prioritize which Critical-to-Quality (CTQ) characteristics to focus on. Which tool links customer requirements to measurable process outputs?

Accepted Answer

Quality Function Deployment (QFD)

Answer

QFD, often using a House of Quality matrix, systematically translates customer requirements (Voice of Customer) into measurable CTQ characteristics.

Certified Six Sigma Black Belt Exam Practice Test

Certified Six Sigma Black Belt Exam Practice Test

Certified Six Sigma Black Belt Exam FREE Certified Six Sigma Black Belt Assessment Questions and Answers 3